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<br />00:1258 <br /> <br />5. Flood Control criteria <br /> <br />'" ~.r' tI\; (JI' . -" ~ ~YD <br />r}'~"J ~~~~\c~ ({~V.t~..f"\C-~' <br />y~' \\';? ~ ~ Jd"~~-{ \f' c q ~-{\ <br />~~7 'xfJ_~~~o.q, Y:# ~. ~.,11i\1 <br />(J/ vJS- r~ \ ~ ~(Y ~-{i\/ <br /> <br />This tier refers to the current Corps of Engineers criteria for space building in Lake <br /> <br /> <br />Six State Proposal <br />Straw Man Draft <br />Includes Fassett and Mutz comments <br />11/4/98 <br /> <br />Mead that is necessary to avoid damaging levels of downstream flood releases. The flood <br /> <br />control criteria is not, per se, a surplus strategy. Rather it is a strategy to use reservoir <br /> <br />space to be able to reduce peak inflows so that outflow rates can be reduced to non- <br /> <br />damaging levels. The surplus strategy relationship develops when the Corps criteria call <br /> <br />for reservoir releases to be made at levels above downstream delivery requirements. <br /> <br />Rather than let that volume be spilled to the Gulf of California, surpluses are <br /> <br />dcdareddesigned to allow increased beneficial use in the Lower Basin States and Mexico. <br /> <br />The Corps has defined specific volumes of storage space that must be left vacant <br /> <br />during certain months of the year depending on forecast volumes to accommodate spring <br /> <br />runoff or other unanticipated weather events. They have also mandated specific release <br /> <br />rates by month to achieve these vacant storage spaces. In order to avoid the "dumping" of <br /> <br />water in order to build storage space, provisions will be made which would allow the <br /> <br />Lower Basin States to schedule additional water for delivery. The volume of extra water <br /> <br />available for delivery is equal to the amount that must be evacuated from storage, above <br /> <br />regularly scheduled downstream demands, to meet the space requirements. Under some <br /> <br />conditions, such as when the reservoirs are starting the year very full and when the <br /> <br />forecast runoff is above average, the amount of flood control release could be several <br /> <br />15 <br />